Ask question

Ask question

All categories

Free_Kalibri [48]

2 years ago

12

There are 20 people in a room, If they all shake each other's hands once and only once, HOW MANY handshakes are there altogether

?

2 answers:

vazorg [7]2 years ago

7 0

I thinkkkkk40 I think

Ann [662]2 years ago

5 0

Answer:380 Shakes

Step-by-step explanation:

first you need to figure out how many people are shaking the persons hand sou you do 20 x 16 which equals 380

You might be interested in

Gianna is going to throw a ball from the top floor of her middle school. When she throws the hall from 48 feet above the ground,

vazorg [7]

Answer:

So, the times the ball will be 48 feet above the ground are t = 0 and t = 2.

Step-by-step explanation:

The height h of the ball is modeled by the following equation

$h(t)=-16t^2+32t+48$

The problem want you to find the times the ball will be 48 feet above the ground.

It is going to be when:

$h(t) = 48$

$h(t)=-16t^{2}+32t+48$

$48=-16t^{2}+32t+48$

$0=-16t^{2}+32t+48 - 48$

$16t^{2} - 32t = 0$

We can simplify by 16t. So

$16t(t-2)= 0$

It means that

16t = 0

t = 0

or

t - 2 = 0

t = 2

So, the times the ball will be 48 feet above the ground are t = 0 and t = 2.

6 0

2 years ago

Ron wants to buy a video game with a selling price of $48. It is on sale for 50% off. The sales tax in his state is 4.5%.

erica [24]

Answer:

50 1/6% (50 and one sixth) or $22.92

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Solve the system by graphing

Juli2301 [7.4K]

Where is the picture?

4 0

2 years ago

It has been estimated that a student's final grade in a course decreases by 5 points for every 2 days absent from class . If stu

trasher [3.6K]

Answer:

The students points will decrease 10 points in 4 days

Step-by-step explanation:

In 2 days he loses 5 points. So for 4 days all you have to do is double the amount of points because the amount of days have doubled

6 0

2 years ago

Bertannyarumus luas lingkaran

lara [203]

First of all that is NOT math and second of al that is not english

3 0

3 years ago